Re: Questions about Grep

If you want to grep a file in Perl, you can read it into an array first:

use strict;

open my $fh, "file.txt" or die "Error opening file.txt: $!";
my @lines = <$fh>;
my @matches = grep /pattern/, @lines;
[download]

There's also the File::Grep module from CPAN which provides some easy-to-use file grepping functionality.

Comment on Re: Questions about Grep Download Code

Replies are listed 'Best First'.
Re^2: Questions about Grep by pc88mxer (Vicar) on May 29, 2008 at 19:14 UTC
Don't know if this is any more efficient, but it's a few less keystrokes: `use strict; open my $fh, "file.txt" or die "Error opening file.txt: $!"; print grep /pattern/, <$fh>;` [download]	[reply] [d/l]
Re^2: Questions about Grep by Anonymous Monk on May 29, 2008 at 19:23 UTC
Thanks!	[reply]